Bicycle lock



Nov. 17, 19 42. A. LEKSUTIN 2,302,654

BICYCLE LOCK Filed May 13, 1941 2 Sheets-Sheet 1 x7451 ZASUT/M Nov. 17, 1942. su-rm 2,302,654

BICYCLE LOCK Filed May 13, 1941 2 Sheets-Sheet 2 Patented Nov. 17, 1942 UNiTED STATES PATENT OFFICE BICYCLE LOCK Alex Leksutin, Detroit, Mich. Application May 13, 1941, Serial No. 393,277 3 Claims. 01.70-227) The purpose of my invention is to provide a lock of simple construction which can be readily installed on a bicycle without the necessity of any changes in its, the bicycles, construction,

Another purpose of my invention is to provide a lock with a. minimum of working parts and yet of such design that the locking 'is positive and eflicient.

I shall now describe my invention with reference to the accompanying drawings:

Fig. 1 is what is known as an exploded view of the principal parts of my lock, in perspective.

Fig. 2 is a sectional view of my look as assembled and installed upon the axle of a bicycle.

Fig. 3 is a fragmentary side elevation of my lock as installed upon the axle of a bicycle.

Fig. '4 is a plan View of the inner mechanism of one element of my lock.

Fig. 5 is a bolt constituting a part of the mechanism shown in Fig. 4,

Fig. 6 shows a plan view of another component part of the mechanism shown in Fig. 4.

- Fig. 7 shows a sectional view of the unit shown in Fig. 4 on line a--a.

Similar throughout the several views.

The lock invented by me is of the type which may be mounted upon the axle of a bicycle and which locks the wheel in a fixed position with respect to said axle by interposing a number of metal pins between the spokes of the bicycle wheel. The principal parts of the lock are shown in Fig. 1 and consist ofa padlock type member ID and cooperative members I5 and 20. The casing 30 of the padlock Ii! forms a fiat ear II extending in'the plane of member ID, the ear being provided on one side with a projecting annular boss I2, shown more clearly, in section, in Fig. 2. I3 indicates an axial circular aperture in said-ear, On the line of conjunction between numerals refer to similar parts the casing 30, with said ear II, said casing forms a fiat shoulder I4. Annular member I5 is intended to adjoin said ear II in such a manner that the circular aperture I6 of said annular member I5 fits snugly over the projecting boss I2. A plurality of pins H are disposed circum ferentially on the fiat surface of ring I5, further remote from the ear II. The pins are adapted to fit into apertures 2I disposed circumferentially on member 20, which is of the same diameter as member I5 and is provided with an axially disposed hub I8 intended to fit through the central opening I6 into the space within the boss I2 on ear II. Coiled springs 32 serve to keep relation to each other. The outline of the cenmounted'on said axle, 25 being wire spokes, and- 28 indicating an annular ball-bearing race. When thethree parts are properly assembled and mounted on the axle, as shown, the flat shoulder I lf the padlock member it bears against a straight line side of a brake arm 21, which forms a part of the bicycle, the brake arm being in a fixed position with respect to the axle. It will be understood that my lock, including all three principal parts, is in a fixed position with respect to said axle, irrespective of the rotation of the bicycle wheel thereon. A nut 25 at the end of axle 23 serves to retain the brake arm 21 and the lock adjoining thereto in position.

Up to this time I restricted myself to the description of the principal parts of my lock, With-r.

out going into any details as to the construction of the inner mechanism of member Ii]. Now I shall point out the working elements in said member I0, with particular reference to Figs. 4 to? inclusive. The casing of the lock is indicated by numeral 3iand is preferably made in one piece with a fiat cover 5!, in which 52 indicates a keyhole extending radially in opposite direc-.

tions. Disposed on the bottom of the casing is a slidable bolt 35 terminating at one end in a lock finger '29, while at the other side it contains a slot 35 disposed in the direction of thelongitudinal axis of said bolt. On one side the bolt contains a substantially V-shaped incision 31. 36 indicates a transversely disposed shoulder. A square pin 38 projects from the surface of the bolt at a right angle thereto.

The sliding reciprocal movement of bolt 34 is limited at one side by a stop 39, which rises from the bottom of the casing and fits into slot 35, and at the other side the movement of said bolt is limited by a cross-bar 42, which contains a gate 40 for the passage of lock finger 29 but which bears against shoulder 36 to limit the motion of said bolt. Adjoining said bo1t'34 on the side member I5 and member 20 normally in a spaced of the incision 31 is a key column 43 slotted on one side to accommodate a key 45. The column is rotatably mounted within the casing,

Superimposed upon said bolt 34 are a number of leaflike tumblers 46. They are all pivoted on pin 41 within the casing, individual springs 48 urging said leaves in the direction of the key. Each leaf contains in its midsection a longitudinal slot 49, one side of the slot forming a tooth 56 extending inwardly. When mounted upon pin 41, the tooth on each leaf is in the path of pin 38 on bolt member 34. The edge of each leave adjoining the key is out of alignment with the edges of the adjoining leaves and this may be said about the respective teeth 56 on said leaves.

When key 45 is inserted into the slotted column 43, its operative edge 53 fits into the incision 31 of bolt 34 and serves to slide the bolt upwardly through the gate in bar 42 or to retract the bolt back into the casing. Assuming that the bolt is in a retracted position, it may be shifted toward a locking position only when teeth 55 on tumblers 46 are out of the way of pin 48 on said bolt. In order to shift the teeth out of the way, each leaf 45 must be swung on its pivot 41 in a direction away from the key, and this can be done by means of key 45 only when notches 54 on the operative edge 53 of the key effect a displacement of each leaf just to a predetermined extent. If the key does not fit, this cannot be accomplished. When, by means of a suitable key, each of the leaves is swung out sufiicient to remove the teeth 56 out of the way of pin 38, the bolt may be shifted into a locking position to a point shown in Fig. 2.

I shall now describe the manner in which member cooperates in conjunction with members I5, and the bicycle to which the lock is applied. Normally, when the lock is mounted on the bicycle wheel as shown in Figs, 2 and 3, members l5 and 16 are spaced apart by means of springs l1 and member I5 is sufliciently out of the way of the wheel revolving with hub 24, to be out of the way of spokes 25. When, however, it is intended to lock the wheel in a fixed position with respect to the axle 23, member l5 may be pressed manually towards member 20 against the tension of springs 22, pins I! being disposed within corresponding apertures 2|. This manual pressure will shift the position of member I5 to a point where pins I! will extend beyond the outer surface of member 28 and will project between spokes of the bicycle wheel. To retain members I5 and 20 in this relative position, bolt 34 may be caused by means of key 45 to shift outwardly to a position abutting the side of member l5 as shown in Fig. 2. This will effect a locking engagement between pins H and spokes 25 so that the bicycle wheel. will be locked in its respective position to axle 23. When by means of a key 45 the bolt is withdrawn into the casing 30, springs 22 will automatically act to disengage member I5 with pins I! from the wheel locking position.

By way of supplementing my description, I wish to add that cover 52 on member In may be secured to said member by means of bolts or screws fittin into apertures 32 and 33, as shown in Fig. 4,

It will be seen that changes may be introduced in the construction of my lock without departing from the principle underlying my invention. What I, therefore, wish to claim is as follows:

1. In a bicycle lock of the kind described, a padlock including a flat ear in the plane thereof and diposed axially with respect to the axle of the bicycle wheel, a disc-like member including a hub fitting into said ear, said disc being provided with a plurality of peripheral openings, an annular member between the ear and the disc containing a plurality of peripherally disposed pins adapted to project through the openings in the disc and into the path of the spokes of the bicycle wheel, to lock same with respect to the axle, spring means between the disc and the annular member to keep the ring and the pins normally out of engagement with the spokes of the wheel, and bolt means in the padlock to retain the ring and the pins in an operative spoke-locking position.

2. A-bicycle lock of the kind described, adapted to be mounted on the axle of a bicycle wheel in a fixed relation thereto, said lock comprising a padlock member including an ear embracing the end of said axle and provided with a circular recess therein, a disc provided with a hub fitting into said recess in said ear and provided with a plurality of peripheral openings, a manually movable annular member between the ear and the disc, axially slidable on the hub of the disc and provided with a plurality of pins peripherally disposed thereon and adapted to project through said openings into the path of the spokes of the bicycle wheel, spring means to keep the pins and the spokes normally out of engagement, and bolt means adapted to be moved radially with respect to the ring against the side thereof, to retain same in an operative spoke-locking position.

3. A bicycle lock of the kind described, adapted to be mounted on the axle of a bicycle wheel in a fixed relation thereto, said lock comprising a padlock member including a flat, substantially circular ear disposed axially with respect to said wheel, and containing a circular recess therein, a disc provided with a hub fitting into said recess, and provided with a plurality of peripheral openings, an annular member between the ear and the disc, axially movable on the hub of the disc and provided with a plurality of pins peripherally disposed thereon and adapted to project through said openings into the path of the spokes of the bicycle wheel to lock them in place with respect to the axle thereof, spring means to keep the pins and the spokes normally out of engagement, and key operated belt means within the padlock adapted to move radially against the side of the ring, to retain the pins thereon in the path of said spokes.

ALEX LEKSUTIN. 

